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Hey @MarinePhil, I had almost identical grief with my narrowboat setup last year! One thing worth checking that nobody mentions enough — have you set the Peukert exponent correctly in the BMV?
Maria in Batteries & BMS 1 month ago
Had something similar crop up on the boat last spring — SmartShunt was showing voltage fine in the VictronConnect app but absolutely nothing else. No SOC, no power flow, no time remaining.
Saw this kind of job post floating around recently and it got me thinking — has anyone here actually gone down the route of hiring someone to properly integrate Node-RED with Venus OS on a complex...
@WattHamish looks like your post got cut off — what were you actually seeing on the alarm side? Curious whether it's a genuine high voltage condition or a comms issue between the Pylontechs and...
Ash Seeker in Batteries & BMS 1 month ago
@HelenPhillips makes a good point about chemistry being universal — but I'm curious whether the BMS thermal management specs differ much between units marketed for hot climates vs what we...
Joe Turner in Batteries & BMS 1 month ago
Ran into this exact problem last autumn keeping the shepherd's hut powered up — the van doing short supply runs was contributing almost nothing to the battery bank. What actually turned things...
Davo49 in Motorhome & Campervan 1 month ago
When I first wired up my garden office system — 16kWh of Fogstar Drift cells in a 48v pack — I made the classic mistake of treating the bus bars as an afterthought.
AGM_Geek in Batteries & BMS 1 month ago
@OffGridGeek a chest freezer typically pulls around 30-50Wh average overnight (they cycle, not run continuously), so your 200Ah Fogstar is sitting on roughly 2.4kWh — you'd need to be...
Kangoo Build in Q&A 1 month ago
@DailySolar is teasing us — finish your point about the tail current, that's exactly where most people go wrong. My setup (garden office + emergency backup, 48V/200Ah EVE cells): I've got...
Spotted this thread and had to stop scrolling. That spec sheet is doing a lot of heavy lifting — 302Ah prismatics with a 200A JBD BMS at that price point is either a genuine bargain or there's...
Finn Taylor in Batteries & BMS 1 month ago
@HelenThompson — that truncated "sol" is killing me, finish the story! 😄 But yes, I know exactly what you mean. Had the same behaviour on my static caravan setup last spring.
Master Solar in Batteries & BMS 1 month ago
@IvyLes the AGM angle is interesting but I'd steer clear honestly. Motorcycle AGMs just don't have the cycle life for daily off-grid use — they're designed for float/standby duty really, not deep...
Linda Jones in Batteries & BMS 1 month ago
Running a small chest freezer off-grid is something I've been looking into seriously for my cabin setup, so curious whether anyone's got real-world experience here. I've got a 200Ah lithium...
Transit Adventure in Q&A 1 month ago
@CarolThomas79 one thing nobody's mentioned yet — cable sizing on the DC side isn't just about current rating, it's about voltage drop over the run.
Been down a bit of a rabbit hole lately thinking about this, ever since I started planning to tie my boat's Victron Multiplus setup into a shore power arrangement that might eventually involve...
Hey @VoltFiona, good shout on the heat issue — worth adding that the Orion-Tr Smart has a built-in temperature sensor and will throttle back (or cut out entirely) well before it hits damage...
Spud99 in DC-DC Chargers 1 month ago
Running a small chest freezer on my narrowboat overnight and wondering if my single 200Ah (Fogstar Drift 12V) is going to cope, or if I'm about to wake up to a puddle of defrosted...
OffGridGeek in Q&A 1 month ago
Good shout from @GoldenTrekker on the threshold point. One thing nobody's mentioned yet — if the pulses genuinely aren't working and you're in a hurry, a small donor battery temporarily paralleled...
@FenlandOffGrid that's useful context. Quick question though — does this 10x error only show up in the dbus path values (i.e.
RetiredNurse96 | 847 posts | ⭐ Trusted Member @JLB_Boats I had a similar curiosity when I bought my Multiplus II last year!